We'll need to be able to issue PUT calls.
Conflicts: code formatting, missing nmcs-provider-aliyun, azure and
gcp. Missing commit 494819bbbf ("cloud-setup: move common code for
get_config() to base class and improve cancellation")
(cherry picked from commit cd74d75002)
(cherry picked from commit eff4372045)
(cherry picked from commit aaf66e9174)
(cherry picked from commit 3d94f4fdf9)
(cherry picked from commit 181466c6da)
(cherry picked from commit 7243307bb8)
(cherry picked from commit 1aa88024cb)
(cherry picked from commit 59b5a8fdcb)
(cherry picked from commit 0962b6e23d)
(cherry picked from commit b31caa6d6a)
We're going to extend those to issue methods other than GET.
Also, "request" would've been too long, "req" looks nicer.
Conflicts: code formatting, missing trivial commit in,
provider-azure and gcp, missing 494819bbbf ("cloud-setup: move common
code for get_config() to base class and improve cancellation")
(cherry picked from commit 85ce088616)
(cherry picked from commit 6e8cfbae32)
(cherry picked from commit 20cd11ee49)
(cherry picked from commit 9ce530fa7a)
(cherry picked from commit d6d161a31d)
(cherry picked from commit 977fc2c8c5)
(cherry picked from commit 89ee76409b)
(cherry picked from commit e3d23c7ee0)
(cherry picked from commit 3a0f3ff46f)
It's not used anywhere.
Conflicts: code formatting only
(cherry picked from commit ce225b2c06)
(cherry picked from commit 23b9514080)
(cherry picked from commit 36d417af60)
(cherry picked from commit d83537bff5)
(cherry picked from commit f584b9c97b)
(cherry picked from commit f59f629431)
(cherry picked from commit 1885ff2c65)
(cherry picked from commit cab0b16d3c)
(cherry picked from commit 3a55788885)
(cherry picked from commit d1832ae789)
